Group 1 in Periodic Table by Abhishek Jaguessar

8/4/2019 Group 1 in Periodic Table by Abhishek Jaguessar

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Groups 1 - The Alkali Metals

By

Abhishek Jaguessar


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starter

What is the name of the group 1 elements? Name 3 of these elements. If one of these elements has the symbol and

atomic number and mass Na

What are the number of protons, neutrons and

electrons in this atom? What is the electron arrangement in this atomand how do we know what group we shouldplace it in?

23

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answers

What is the name of the group1 elements?

Name 3 of these elements. If one of these elements has

the symbol and atomic number

and mass

Na

What are the number ofprotons, neutrons andelectrons in this atom?

What is the electronarrangement in this atom andhow do we know what groupwe should place it in?

Alkali metals

Lithium, sodium, potassium,rubidium, caesium, francium

Protons = 11 Neutrons = 12 Electrons = 11 2,8,1 Placed in group 1 as the atom

has one electron in its outershell

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Walt and WILF

WALT

Different elements have different properties related to theirposition in the Periodic Table

WILF

Locate the position in the Periodic Table of the alkalimetals.

Recall how the alkali metals react with water and how this

reaction changes as we travel down the group. Recall whether these reactions are endothermic or

exothermic.


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Group 1 The alkali metals

Li

Na

K

Rb

Cs

Fr


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Groups 1 and 2

Groups 1 and 2 are always found in naturecombined with other elements.

Theyre called active metals because of theirreadiness to form new substances with other

elements. They are all metals except hydrogen, the first

element in Group 1.

Representative ElementsRepresentative Elements

Although hydrogen is placed in Group 1, itshares properties with the elements in Group1 and Group 17.


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low densities and low

melting points.

All the alkali metals are silvery solids with

Alkali Metals

The Group 1 elements have a specific familynamealkalimetals.

These elements increase intheir reactivity, or tendency

to combine with othersubstances, as you movefrom top to bottom.


8/11

Walt and WILF

WALT

Different elements have different properties related to theirposition in the Periodic Table

WILF

Locate the position in the Periodic Table of the alkalimetals.

Recall how the alkali metals react with water and how this

reaction changes as we travel down the group. Recall whether these reactions are endothermic or

exothermic.


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Group 1 The alkali metals

1) These metals all have ___electron in their outer shell

Some facts

2) Reactivity increases as you go _______ the group. This is

because the electrons are further away from the _______every time a _____ is added, so they are given up more easily.

3) They all react with water to form an alkali (hence theirname) and __________, e.g:

Words down, one, shell, hydrogen, nucleus

Potassium + water potassium hydroxide + hydrogen

2K(s) + 2H2O(l) 2KOH(aq) + H2(g)


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Plenary 1.

Predict

What would happen if rubidium was added

to water.

1. how fast will it react?

2. Will it be endothermic or exothermic?

3. What gas will be formed? 4. What would be the word equation


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Plenary 2.

Predict

What would happen if caesium was added

to water.

1. how fast will it react?

2. Will it be endothermic or exothermic?

3. What gas will be formed? 4. What would be the word equation?

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Group 1 in Periodic Table by Abhishek Jaguessar